The warm-up phenomenon—where a system sounds better after it's been on for some time, the time being much longer than would be accounted for by anything in the measured performance—is well-known to audiophiles, and it often manifests itself at shows. This was the case with the system in the Avantgarde room: Avantgarde Duo Mezzo loudspeakers ($47,250/pair), Avantgarde One preamp ($37,500) and One power amp ($45,000), with Brinkmann analog and Audio Aero digital front ends. I heard the system early on the first day of the show, and although it didn't sound bad, it didn't sound as great as I'd heard Avantgarde speakers sounding. Could it be the room or perhaps the setup? Avantgarde Acoustics designer Matthias Ruff was on hand; between him and Jody Hickson of Globe Marketing, Avantgarde's new North American distributor, they should have been able to sort out the setup, but the sound was definitely disappointing, being on the dry side, a characteristic I don't associate with Avantgarde speakers.

I went back to listen late on the second day of the show, and it was quite a sonic transformation. The warmth I was expecting had returned, and, combined with the effortless dynamics, made for a much more relaxing listening experience. Jody told me that they hadn't changed the setup; it was just the electronics taking a long time to warm up sonically.